Melt chocolate over a double boiler or in the microwave, stirring until totally smooth. Add to a large bowl and whisk in a few tablespoons of whiskey, stirring until combined. It may separate a bit, which is fine. Whisk in the condensed and evaporated milks until smooth and creamy, then whisk in the remaining whiskey, instant coffee and cream. The instant coffee and chocolate may not totally disolve at first, but it will as it sits.